Vienna Hypertext fits exactly this niche: https://vienna.earth/
History tells me to never trust anything this well funded for something likely to be so personal. Perhaps theres a business case and good luck, but I'll be avoiding.
So if you enjoy the project, or want to support some of the researchy aspects of it, please consider upgrading!
I have another article in the works about the importance of independent funding models and slow growth incentives w/r/t organic social networks, and projects that necessarily require slow exploration as a community (not, in contrast, “spaces designed by committee”).